WO2002023464A1 - Code a points et lecteur de code a points - Google Patents
Code a points et lecteur de code a points Download PDFInfo
- Publication number
- WO2002023464A1 WO2002023464A1 PCT/JP2001/007761 JP0107761W WO0223464A1 WO 2002023464 A1 WO2002023464 A1 WO 2002023464A1 JP 0107761 W JP0107761 W JP 0107761W WO 0223464 A1 WO0223464 A1 WO 0223464A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dots
- dot code
- dot
- printing
- reading
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
- G06K7/1404—Methods for optical code recognition
- G06K7/1408—Methods for optical code recognition the method being specifically adapted for the type of code
- G06K7/1417—2D bar codes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K1/00—Methods or arrangements for marking the record carrier in digital fashion
- G06K1/12—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching
- G06K1/121—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching by printing code marks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06037—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking multi-dimensional coding
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
- G06K7/1404—Methods for optical code recognition
- G06K7/146—Methods for optical code recognition the method including quality enhancement steps
- G06K7/1469—Methods for optical code recognition the method including quality enhancement steps using sub-pixel interpolation
Definitions
- the present invention relates to a dot code and a dot code reading device, and more particularly, to a dot code and a reading device capable of preventing codes of upper and lower lines from being overlapped and capable of reliably reading.
- This two-dimensional code is printed on a medium such as paper by, for example, an ink jet printer or a dot impact printer that prints with dots.
- a two-dimensional code is composed of a group of blocks of a predetermined size as shown in FIG. 1 or FIG.
- one code (one bit) is represented by 4 x 4 dots (16 dots in total).
- one code is represented by 3 dots vertically by 3 dots horizontally (a total of 9 dots).
- a predetermined code is represented by the presence or absence of a block (code) at each position. Therefore, by printing such a two-dimensional code on a printed material, various kinds of information can be assigned to the printed material.
- the best way to increase the amount of information with a fixed printing area is to reduce the number of dots that make up one code. That is, as shown in FIG. 3, the amount of information is greatest when one code is represented by one dot.
- the pitch of each row or column is P in both the row direction and the column direction
- dots are printed at intervals of 2P.
- the dot has a diameter slightly larger than the highest resolution pitch P.
- the dot is not a perfect circle, but is almost a circle.
- the dot diameter means the diameter of the circle.
- FIG. 6 is a diagram illustrating an example of a dot code when the printing position is slightly shifted in the transport direction of the medium.
- dots are printed on the lines L2 and L3 from the target printing position (the position indicated by the hatched rectangle in the figure) that the printing device should originally print. Have been.
- (in the figure, downward) direction of the line L z in the line L 3 the addition, in the line L 3, (in the figure, upward) direction line L 2 in each, are printed protrudes dots I have.
- the present invention has been made in view of such a situation, and it is an object of the present invention to suppress dot overlap between upper and lower lines and realize a dot code that can be read reliably.
- the dot code according to the present invention is characterized in that, in rows where dots are arranged, in rows adjacent to each other, the dots are arranged so that the phases of the dots are shifted.
- the dots are arranged so that the phases of the dots are shifted from each other in rows where dots adjacent to each other are arranged.
- the dot in this case has a value slightly larger than the highest resolution pitch of a printing apparatus such as an ink jet printer (trademark) or an impact printer in the row direction or in both the row direction and the column direction. Also, the dots are not perfect circles but are almost circular.
- the dot diameter means the diameter of the circle.
- the phase means the temporal, spatial, or positional deviation of the waveform representing the density of the dot.
- a dot code printing apparatus includes: a conversion unit that converts input data into a dot code; and a printing unit that prints the dot code converted by the conversion unit on a medium.
- rows to be arranged rows adjacent to each other are characterized in that dots are arranged so that the phases of the dots are shifted.
- input data is converted into a dot code, and the converted dot code is printed on a medium.
- the printing means arranges the dots so that the phases of the dots are shifted from each other on the rows where the dots are arranged.
- the dot code printing method of the present invention includes a conversion step of converting input data into a dot code, and a printing step of printing the dot code converted by the processing of the conversion step on a medium.
- a conversion step of converting input data into a dot code and a printing step of printing the dot code converted by the processing of the conversion step on a medium.
- dots are arranged so that the phases of the dots are shifted. It is characterized by that.
- the dot code printing method of the present invention input data is converted into a dot code, and the converted dot code is printed on a medium.
- the printing step is a line in which dots are arranged. In adjacent lines, the dots are arranged so that the phases of the dots are shifted.
- a dot code reading device includes a reading unit that reads a dot code composed of a plurality of dots, a binarizing unit that binarizes data read by the reading unit, and a binarizing unit that binarizes the data read by the reading unit.
- a dot code composed of a plurality of dots is read, and the read data is binarized. Is determined based on the result of the exclusive OR operation of. This makes it possible to reliably recognize the change between the upper and lower lines.
- the reading means irradiates the card on which the two-dimensional code is printed with light, and a reading device such as a CCD image pickup device images the surface of the card on which the two-dimensional code is printed, thereby obtaining a two-dimensional image. Read the code.
- the binarizing unit binarizes the image signal read by the reading unit in synchronization with a synchronization signal synchronized with the reading operation.
- the calculating means calculates an exclusive OR of each pixel of the data binarized by the binarizing means with a pixel adjacent in the column direction.
- the determination means determines a row including a pixel whose calculated value calculated by the calculation means is 1 as a line break.
- a dot code reading method includes a reading step of reading a dot code composed of a plurality of dots, a binarization step of binarizing data read by the processing of the reading step, and a binarization step. Calculating the exclusive-OR of the pixels adjacent in the column direction of the data binarized by the processing of step 1, and determining the break of the dot row based on the calculation result of the processing of the calculation step And a determining step.
- a dot code composed of a plurality of dots is read, the read data is binarized, and the binarized data of the pixels adjacent to each other in the column direction is read.
- the line break of the dot is determined based on the result of the exclusive OR operation. This makes it possible to reliably recognize the change between the upper and lower lines.
- FIG. 1 is a diagram for explaining a conventional dot code.
- FIG. 2 is a diagram for explaining another example of a conventional dot code.
- FIG. 3 is a diagram for explaining still another example of a dot code.
- FIG. 4 is a diagram for explaining the print density of dots.
- FIG. 5 is a diagram for explaining the printing density of a dot of another example.
- FIG. 6 is a diagram for explaining a shift of a dot printing position.
- FIG. 7 is a block diagram illustrating a configuration example of a printing apparatus to which the present invention has been applied.
- FIG. 8 is a diagram for explaining a printing example of the card in FIG.
- FIG. 9 is a block diagram showing a configuration example of a card reader to which the present invention is applied.
- FIG. 10 is a diagram showing a printing state of dots.
- FIG. 11 is a diagram showing a printing state in which the phases are shifted.
- FIG. 12 is a diagram showing a printing state in which the phase is shifted in another example.
- FIG. 13 is a diagram showing a grayscale waveform of the dot shown in FIG.
- FIG. 14 is a diagram showing a printing state in which the phases are shifted.
- FIG. 15 is a diagram for explaining a reading operation.
- FIG. 16 is a diagram for explaining a state in which the dots shown in FIG. 15 have been read.
- FIG. 17 is a diagram for explaining the result of detecting a line break.
- BEST MODE FOR CARRYING OUT THE INVENTION FIG. 7 shows a configuration example of an embodiment of a printing apparatus to which the present invention is applied.
- data for example, audio data
- the data processing unit 1 converts the input data into a two-dimensional code pattern and outputs it to the printing unit 2.
- the printing unit 2 prints (prints) the print pattern input from the data processing unit 1 on a card 3 made of paper, plastic, or the like.
- FIG. 8 shows an example of the card 3 on which the two-dimensional code is printed as described above.
- four two-dimensional codes 1 1 1 to 1 1 to 4 (hereinafter, these two-dimensional codes 11 1 to 1 1 to 4 do not need to be individually distinguished.
- the two-dimensional code 11-1 is divided into a header section 12-1 and a data section 13-1.
- the header section 12-1 records the type, version, and other information of the data recorded in the data section 13-1.
- audio data is recorded in the data section 13-1.
- FIG. 9 shows a configuration example of a reading device that reads the card 3 on which the two-dimensional code 11 is printed.
- the card 3 is placed on the belt 25 with the surface on which the two-dimensional code 11 is printed facing up. Since the motor 26 drives the belt 25, the force 3 is conveyed (moved) from left to right in the figure.
- the light source 22 generates light in response to the light source control signal output from the image data reading unit control circuit 23 and irradiates the card 3.
- a reading element 21 composed of a CCD image sensor or the like is controlled by an image data reading section control circuit 23 to take an image of the surface of the card 3 on which the two-dimensional code 11 is printed, and obtain the result of the imaging.
- the obtained image signal is output to the data processing section 24.
- the data processing unit 24 also receives a synchronization signal synchronized with the image reading operation from the image data reading unit control circuit 23.
- the data processing section 24 binarizes the image signal input from the reading element 21 in synchronization with the synchronization signal input from the image data reading section control circuit 23, performs a recognition process, and performs a recognition result. Generate a binary code based on the.
- the data processing unit 24 further executes this binary code Is converted into an analog audio signal and output to the speaker 30 via the amplifier 29.
- the CPU 27 controls the data processor 24 and the motor 26.
- data and programs necessary for the CPU 27 to execute various processes are appropriately recorded.
- the CPU 27 controls the motor 26 to drive the belt 25 when the start of reading is instructed by the user.
- the card 3 placed on the belt 25 is conveyed from left to right in the drawing.
- the CPU 27 also controls the image data reading section control circuit 23 to generate light from the light source 22 and irradiate the card 3. At this time, the reading element 21 is controlled by the image data reading section control circuit 23 and reads the two-dimensional code 11 printed on the card 3.
- the data processing section 24 binarizes the image signal input from the reading element 21, converts the image signal into binary data, and then converts this into an analog audio signal. This analog audio signal is output to the speaker 30 via the amplifier 29.
- the printing unit 2 that prints on force 3 has a pitch value P of the highest resolution.
- the diameter of the dot is set to a value slightly larger than the pitch value P of the highest resolution.
- every other line in the example of FIG. 10, on the odd-numbered line
- Dots are printed at 2P intervals.
- dots are printed on all columns.
- dots are printed in adjacent rows so that the phases are shifted.
- dots are printed on lines Ll and L5 in columns Ci, C3, Cs, Ci and C9, and on lines L3 and L7 in columns C2, C4, C6 and Cs. .
- Fig. 11 (A) if the phase is not shifted, the interval between the two dots is 2P, but if the phase is shifted, the interval between the two dots is more than 2P. become longer.
- Fig. 11 (C) if two dots are printed without shifting the phase, the interval will be P, but if the phase is shifted, the interval will be longer than P B 2 As a result, it is possible to suppress overlapping of the codes of the upper and lower lines.
- Fig. 10 two types of phases were used.For example, as shown in Fig. 12, the phase is separated by 2 dots in the row direction and 1 dot in the column direction. Even when printing is performed in other words, that is, even when the types of phases are set to three, it is possible to suppress the codes of the upper and lower lines from overlapping.
- dots are printed at every other line (in the example of FIG. 12, at the odd-numbered line), that is, at intervals of 2P. In addition, dots are printed on all columns. However, in adjacent rows, dots are printed so that the phases are shifted.
- lines Li, L7, in columns C2, Cs, Cs, Cu, line L3, and in columns C3, CB, C9, line L5 The dot is printed on each.
- the first 3 figures represent shading waveforms printed the line Li and the line L 3 dots in the printing method as shown in FIG. 12 S and (Li) S and (L 3). Shown in the figure As can be seen, since the phases of the gray waveforms of the line Li (S (Li)) and the line La (S (La)) are shifted for each line, the change of the upper and lower lines can be reliably recognized.
- FIG. 14 shows an example in which printing is performed using all dots in the column direction, separated by one dot in the row direction. As shown in the figure, since the phase is shifted for each line, it is possible to suppress the overlapping of the codes of the upper and lower lines. Although dots can be arranged as shown in Fig. 14, dots may not be printed in all columns depending on the data representing the dot code.
- the reading element 21 reads a two-dimensional dot code as shown in FIG. 15 based on the control of the image data reading section control circuit 23. As a result, as shown in FIG. 16, the density of the dot is read, and a plurality of pixel signals are output to the data processing unit 24.
- the data processing unit 24 binarizes the pixel signal input from the reading element 21. That is, as shown in FIG. 17 (A), the data processing unit 24 binarizes a pixel where data exists as 1 and a pixel where data does not exist as 0.
- the exclusive OR of each pixel is calculated, the result is as shown in FIG. 17 (B).
- the row including the pixel whose operation value becomes 1 is consequently changed to the change point (the dot in the upper line). And the boundary between the dots on the lower line). That is, in the case of the example of FIG. 17 (B), it can be seen that the second, third, sixth, seventh and tenth rows are the changing points.
- the dot code of this invention can suppress that the code of upper and lower lines overlap, and can implement
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Quality & Reliability (AREA)
- Image Processing (AREA)
- Printers Characterized By Their Purpose (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/363,915 US20040039982A1 (en) | 2000-09-12 | 2001-09-07 | Dot code and dot code reader |
JP2002527440A JPWO2002023464A1 (ja) | 2000-09-12 | 2001-09-07 | ドットコードおよびドットコード読み取り装置 |
AU2001284468A AU2001284468A1 (en) | 2000-09-12 | 2001-09-07 | Dot code and dot code reader |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-276167 | 2000-09-12 | ||
JP2000276167 | 2000-09-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002023464A1 true WO2002023464A1 (fr) | 2002-03-21 |
Family
ID=18761681
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/007761 WO2002023464A1 (fr) | 2000-09-12 | 2001-09-07 | Code a points et lecteur de code a points |
Country Status (4)
Country | Link |
---|---|
US (1) | US20040039982A1 (ja) |
JP (1) | JPWO2002023464A1 (ja) |
AU (1) | AU2001284468A1 (ja) |
WO (1) | WO2002023464A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8237983B2 (en) | 2004-12-28 | 2012-08-07 | Kenji Yoshida | Information input output method using dot pattern |
US8253982B2 (en) | 2005-04-28 | 2012-08-28 | Kenji Yoshida | Information input/output method using dot pattern |
US9372548B2 (en) | 2002-09-26 | 2016-06-21 | Kenji Yoshida | Information reproduction/I/O method using dot pattern, information reproduction device, mobile information I/O device, and electronic toy using dot pattern |
US9400951B2 (en) | 2005-07-01 | 2016-07-26 | Grid Ip Pte Ltd | Dot pattern |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI249141B (en) * | 2004-07-12 | 2006-02-11 | Sunplus Technology Co Ltd | Document having index data and system for reading document having index data |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03217990A (ja) * | 1990-01-23 | 1991-09-25 | Ricoh Co Ltd | 2値情報処理方式 |
JPH0830977A (ja) * | 1994-07-19 | 1996-02-02 | Olympus Optical Co Ltd | 情報記録媒体及び情報記録再生システム |
JPH08171620A (ja) * | 1994-12-16 | 1996-07-02 | Olympus Optical Co Ltd | 情報記録媒体及び情報再生システム |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5712666A (en) * | 1991-08-09 | 1998-01-27 | Canon Kabushiki Kaisha | Recording apparatus |
DK0670555T3 (da) * | 1992-09-28 | 2000-09-18 | Olympus Optical Co | Registreringsmedium med prikkode og informationsregistreringssystem |
JP3676443B2 (ja) * | 1995-09-01 | 2005-07-27 | オリンパス株式会社 | 情報再生装置及び情報再生方法 |
JPH09114951A (ja) * | 1995-10-23 | 1997-05-02 | Olympus Optical Co Ltd | 情報記録媒体 |
JP2000094753A (ja) * | 1998-09-25 | 2000-04-04 | Canon Inc | 記録装置及び記録装置の制御方法 |
JP3458737B2 (ja) * | 1998-11-27 | 2003-10-20 | 株式会社デンソー | 2次元コードの読取方法及び記録媒体 |
-
2001
- 2001-09-07 JP JP2002527440A patent/JPWO2002023464A1/ja active Pending
- 2001-09-07 WO PCT/JP2001/007761 patent/WO2002023464A1/ja active Application Filing
- 2001-09-07 US US10/363,915 patent/US20040039982A1/en not_active Abandoned
- 2001-09-07 AU AU2001284468A patent/AU2001284468A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03217990A (ja) * | 1990-01-23 | 1991-09-25 | Ricoh Co Ltd | 2値情報処理方式 |
JPH0830977A (ja) * | 1994-07-19 | 1996-02-02 | Olympus Optical Co Ltd | 情報記録媒体及び情報記録再生システム |
JPH08171620A (ja) * | 1994-12-16 | 1996-07-02 | Olympus Optical Co Ltd | 情報記録媒体及び情報再生システム |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9372548B2 (en) | 2002-09-26 | 2016-06-21 | Kenji Yoshida | Information reproduction/I/O method using dot pattern, information reproduction device, mobile information I/O device, and electronic toy using dot pattern |
US9773140B2 (en) | 2002-09-26 | 2017-09-26 | Kenji Yoshida | Information reproduction/I/O method using dot pattern, information reproduction device, mobile information I/O device, and electronic toy using dot pattern |
US9946964B2 (en) | 2002-09-26 | 2018-04-17 | Kenji Yoshida | Information reproducing method, information inputting/outputting method, information reproducing device, portable information inputting/outputting device and electronic toy using dot pattern |
US9984317B2 (en) | 2002-09-26 | 2018-05-29 | Kenji Yoshida | Information reproducing method, information inputting / outputting method, information reproducing device, portable information inputting/ outputting device and electronic toy using dot pattern |
US10192154B2 (en) | 2002-09-26 | 2019-01-29 | Kenji Yoshida | Information reproduction/I/O method using dot pattern, information reproduction device, mobile information I/O device, and electronic toy using dot pattern |
US10339431B2 (en) | 2002-09-26 | 2019-07-02 | Kenji Yoshida | Information reproduction/I/O method using dot pattern, information reproduction device, mobile information I/O device, and electronic toy using dot pattern |
US8237983B2 (en) | 2004-12-28 | 2012-08-07 | Kenji Yoshida | Information input output method using dot pattern |
US8253982B2 (en) | 2005-04-28 | 2012-08-28 | Kenji Yoshida | Information input/output method using dot pattern |
US8553284B2 (en) | 2005-04-28 | 2013-10-08 | Kenji Yoshida | Information input/output method using dot pattern |
US9582701B2 (en) | 2005-04-28 | 2017-02-28 | Kenji Yoshida | Information input/output method using dot pattern |
US9400951B2 (en) | 2005-07-01 | 2016-07-26 | Grid Ip Pte Ltd | Dot pattern |
Also Published As
Publication number | Publication date |
---|---|
JPWO2002023464A1 (ja) | 2004-01-22 |
US20040039982A1 (en) | 2004-02-26 |
AU2001284468A1 (en) | 2002-03-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH10326331A (ja) | ドットコードを有する記録媒体及びコード読取装置 | |
US6364209B1 (en) | Data reading apparatus | |
JP4752413B2 (ja) | 2次元コード分割表示方法、2次元コード読取方法および2次元コード読取装置 | |
US3870865A (en) | Method and apparatus for optical reading of recorded data | |
WO2002023464A1 (fr) | Code a points et lecteur de code a points | |
US4797940A (en) | Optical character reader | |
JP2003346105A (ja) | 2dバーコードカードとその解読法 | |
JPH0731717B2 (ja) | 光学読取装置 | |
JP2000293644A (ja) | ドットコードおよび2次元コード | |
JP3642390B2 (ja) | ドットコード | |
JPH10198753A (ja) | 2次元コード読取装置 | |
JP2933292B2 (ja) | 複数個の読み取りセンサによる画像読み取りのつなぎ目補正方法 | |
JP3838079B2 (ja) | 画像処理装置および画像処理用のプログラム | |
JP2716291B2 (ja) | 用紙情報入力装置 | |
JP2000348134A (ja) | 読み取り装置 | |
JP3636050B2 (ja) | 光学的情報読取装置 | |
JP3009325B2 (ja) | カルラコードの解析方法 | |
JP4105376B2 (ja) | 図形検出回路 | |
JP2871193B2 (ja) | 画像平滑化処理方法 | |
WO2000060524A1 (fr) | Code par points et code bidimensionnel | |
US6490054B1 (en) | Code image recorder for recording an optically readable code image including markers as reference indexes | |
TW540001B (en) | Method of code print and code format | |
JPH07107689B2 (ja) | 画像信号処理装置 | |
JP2826229B2 (ja) | バーコードラベルの走査位置検出方法 | |
JPS59140587A (ja) | パタ−ン読取り装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PH PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2002527440 Country of ref document: JP |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10363915 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase |